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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
"use strict";
const EXPORTED_SYMBOLS = ["EnigmailWksMimeHandler"];
const { XPCOMUtils } = ChromeUtils.importESModule(
"resource://gre/modules/XPCOMUtils.sys.mjs"
);
const lazy = {};
XPCOMUtils.defineLazyModuleGetters(lazy, {
EnigmailConstants: "chrome://openpgp/content/modules/constants.jsm",
EnigmailDecryption: "chrome://openpgp/content/modules/decryption.jsm",
EnigmailLog: "chrome://openpgp/content/modules/log.jsm",
EnigmailSingletons: "chrome://openpgp/content/modules/singletons.jsm",
EnigmailVerify: "chrome://openpgp/content/modules/mimeVerify.jsm",
});
XPCOMUtils.defineLazyGetter(lazy, "l10n", () => {
return new Localization(["messenger/openpgp/openpgp.ftl"], true);
});
/**
* Module for handling response messages from OpenPGP Web Key Service
*/
var gDebugLog = false;
var EnigmailWksMimeHandler = {
/***
* register a PGP/MIME verify object the same way PGP/MIME encrypted mail is handled
*/
registerContentTypeHandler() {
lazy.EnigmailLog.DEBUG(
"wksMimeHandler.jsm: registerContentTypeHandler()\n"
);
let reg = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
let pgpMimeClass = Cc["@mozilla.org/mimecth;1?type=multipart/encrypted"];
reg.registerFactory(
pgpMimeClass,
"Enigmail WKD Response Handler",
"@mozilla.org/mimecth;1?type=application/vnd.gnupg.wks",
null
);
},
newHandler() {
lazy.EnigmailLog.DEBUG("wksMimeHandler.jsm: newHandler()\n");
let v = new PgpWkdHandler();
return v;
},
};
// MimeVerify Constructor
function PgpWkdHandler(protocol) {
this.inStream = Cc["@mozilla.org/scriptableinputstream;1"].createInstance(
Ci.nsIScriptableInputStream
);
}
// PgpWkdHandler implementation
PgpWkdHandler.prototype = {
data: "",
mimePartNumber: "",
uri: null,
backgroundJob: false,
QueryInterface: ChromeUtils.generateQI(["nsIStreamListener"]),
onStartRequest(request, ctxt) {
lazy.EnigmailLog.DEBUG("wksMimeHandler.jsm: onStartRequest\n"); // always log this one
this.mimeSvc = request.QueryInterface(Ci.nsIPgpMimeProxy);
if ("messageURI" in this.mimeSvc) {
this.uri = this.mimeSvc.messageURI;
} else {
this.uri = ctxt;
}
if ("mimePart" in this.mimeSvc) {
this.mimePartNumber = this.mimeSvc.mimePart;
} else {
this.mimePartNumber = "";
}
this.data = "";
this.msgWindow = lazy.EnigmailVerify.lastWindow;
this.backgroundJob = false;
if (this.uri) {
this.backgroundJob =
this.uri.spec.search(/[&?]header=(print|quotebody)/) >= 0;
}
},
onDataAvailable(req, dummy, stream, offset, count) {
if ("messageURI" in this.mimeSvc) {
// TB >= 67
stream = dummy;
count = offset;
}
LOCAL_DEBUG("wksMimeHandler.jsm: onDataAvailable: " + count + "\n");
if (count > 0) {
this.inStream.init(stream);
let data = this.inStream.read(count);
this.data += data;
}
},
onStopRequest() {
lazy.EnigmailLog.DEBUG("wksMimeHandler.jsm: onStopRequest\n");
if (this.data.search(/-----BEGIN PGP MESSAGE-----/i) >= 0) {
this.decryptChallengeData();
}
let jsonStr = this.requestToJsonString(this.data);
if (this.data.search(/^\s*type:\s+confirmation-request/im) >= 0) {
lazy.l10n.formatValue("wkd-message-body-req").then(value => {
this.returnData(value);
});
} else {
lazy.l10n.formatValue("wkd-message-body-process").then(value => {
this.returnData(value);
});
}
this.displayStatus(jsonStr);
},
decryptChallengeData() {
lazy.EnigmailLog.DEBUG("wksMimeHandler.jsm: decryptChallengeData()\n");
let windowManager = Services.wm;
let win = windowManager.getMostRecentWindow(null);
let statusFlagsObj = {};
let res = lazy.EnigmailDecryption.decryptMessage(
win,
0,
this.data,
null, // date
{},
{},
statusFlagsObj,
{},
{},
{},
{},
{},
{}
);
if (statusFlagsObj.value & lazy.EnigmailConstants.DECRYPTION_OKAY) {
this.data = res;
}
lazy.EnigmailLog.DEBUG(
"wksMimeHandler.jsm: decryptChallengeData: decryption result: " +
res +
"\n"
);
},
// convert request data into JSON-string and parse it
requestToJsonString() {
// convert
let lines = this.data.split(/\r?\n/);
let s = "{";
for (let l of lines) {
let m = l.match(/^([^\s:]+)(:\s*)([^\s].+)$/);
if (m && m.length >= 4) {
s += '"' + m[1].trim().toLowerCase() + '": "' + m[3].trim() + '",';
}
}
s = s.substr(0, s.length - 1) + "}";
return s;
},
// return data to libMime
returnData(message) {
lazy.EnigmailLog.DEBUG("wksMimeHandler.jsm: returnData():\n");
let msg =
'Content-Type: text/plain; charset="utf-8"\r\n' +
"Content-Transfer-Encoding: 8bit\r\n\r\n" +
message +
"\r\n";
if ("outputDecryptedData" in this.mimeSvc) {
this.mimeSvc.outputDecryptedData(msg, msg.length);
} else {
let gConv = Cc["@mozilla.org/io/string-input-stream;1"].createInstance(
Ci.nsIStringInputStream
);
gConv.setData(msg, msg.length);
try {
this.mimeSvc.onStartRequest(null);
this.mimeSvc.onDataAvailable(null, gConv, 0, msg.length);
this.mimeSvc.onStopRequest(null, 0);
} catch (ex) {
lazy.EnigmailLog.ERROR(
"wksMimeHandler.jsm: returnData(): mimeSvc.onDataAvailable failed:\n" +
ex.toString()
);
}
}
},
displayStatus(jsonStr) {
lazy.EnigmailLog.DEBUG("wksMimeHandler.jsm: displayStatus\n");
if (this.msgWindow === null || this.backgroundJob) {
return;
}
try {
LOCAL_DEBUG("wksMimeHandler.jsm: displayStatus displaying result\n");
let headerSink = lazy.EnigmailSingletons.messageReader;
if (headerSink) {
headerSink.processDecryptionResult(
this.uri,
"wksConfirmRequest",
jsonStr,
this.mimePartNumber
);
}
} catch (ex) {
lazy.EnigmailLog.writeException("wksMimeHandler.jsm", ex);
}
},
};
////////////////////////////////////////////////////////////////////
// General-purpose functions, not exported
function LOCAL_DEBUG(str) {
if (gDebugLog) {
lazy.EnigmailLog.DEBUG(str);
}
}
function initModule() {
let nspr_log_modules = Services.env.get("NSPR_LOG_MODULES");
let matches = nspr_log_modules.match(/wksMimeHandler:(\d+)/);
if (matches && matches.length > 1) {
if (matches[1] > 2) {
gDebugLog = true;
}
}
}
initModule();
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